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Electrical principles

Quiz by Abed Suwissat

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16 questions
Show answers
  • Q1
    What is the SI unit of electric current?
    Ampere
    Ohm
    Volt
    Coulomb
    30s
  • Q2
    What is the formula for calculating electric power?
    Power = Voltage x Current
    Power = Resistance / Current
    Power = Current² x Resistance
    Power = Voltage / Resistance
    30s
  • Q3
    What is the purpose of a ground wire in an electrical circuit?
    To provide a safe path for electrical current to flow to the ground
    To store electrical energy
    To control the flow of current in a circuit
    To increase the voltage in a circuit
    30s
  • Q4
    What is the unit of electrical resistance?
    Coulomb
    Ampere
    Ohm
    Volt
    30s
  • Q5
    What is Ohm's law?
    The relationship between voltage, current, and resistance in an electrical circuit
    The measure of capacitance in a circuit
    The measure of charge stored in a capacitor
    The measure of electrical power in a circuit
    30s
  • Q6
    What is the purpose of a circuit breaker in an electrical circuit?
    To protect the circuit from excessive current
    To increase the voltage in a circuit
    To control the flow of current in a circuit
    To store electrical energy
    30s
  • Q7
    Which of the following statements about DC current is true?
    It flows in one direction only.
    It flows in both directions.
    It flows randomly.
    It flows in any direction.
    30s
  • Q8
    What is the unit of measurement for DC current?
    Ohms
    Volts
    Watts
    Amperes
    30s
  • Q9
    What is the symbol used to represent DC current in circuit diagrams?
    V
    A
    I
    C
    30s
  • Q10
    What is the main difference between DC current and AC current?
    DC current changes amplitude periodically.
    AC current flows in one direction only.
    AC current changes direction periodically.
    DC current flows in both directions.
    30s
  • Q11
    Which of the following statements accurately describes the behavior of DC current in a circuit?
    It constantly changes magnitude but maintains a constant direction.
    It changes both magnitude and direction periodically.
    It maintains a constant magnitude and direction.
    It constantly changes direction but maintains a constant magnitude.
    30s
  • Q12
    What is the device used to measure DC current?
    Ohmmeter
    Voltmeter
    Ammeter
    Wattmeter
    30s
  • Q13
    What is the disadvantage of DC current compared to AC current for long-distance transmission?
    DC current requires larger conductors.
    DC current experiences greater power losses.
    DC current is more expensive to generate.
    DC current is more dangerous to work with.
    30s
  • Q14
    What is the key characteristic of DC current?
    Its voltage is higher than AC current.
    Its voltage varies periodically.
    Its voltage depends on the resistance of the circuit.
    Its voltage remains constant over time.
    30s
  • Q15
    What is AC current?
    Direct current
    Battery current
    Static current
    Alternating current
    30s

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